Inam abolition grant related

Hello Sir, Will a regrant of property to the Inamdar, through Inam Abolition act (Mysore), be considered as ancestral property or self acquired property? In my case, my maternal great grandmother possessed Inam land which was acquired as a gift from her brother. It went to the Government and when it was regranted through the Inam Abolition Act, it came to her son (my grand father). Now the question is: Is the property that my grand father got as Inamdar considered as self acquired or as ancestral property? Can he write a will for such property? Regards, Bkr.